Family returns from vacation to find home flooded, frozen

Standard practice for us when leaving for any activity where we are gone more than a day, shut the water pump off. At most, if something broke, it would only run until the water pressure ran out of the lines.

However, for the last 4 years, we've had my son living with us, with his (now almost 5 year old) son. So, the house is occupied 24x7x365 now. (hoping someday he'll finally move out again!)